21.. Department of Homeland Security and CIA produced ______ joint report on Monday warning that ______ next 911 could in fact occur on ______ different date.
A.the; a; the B.a; the; a C./; the; the D.a; /; the
22. It is a strange phenomenon that some young people today think it is their parents’responsibility to earn money and_______ to spend it.
A.them B.they C.their D.theirs
